Three dimensional printing (3 d printing), namely a kind of rapid
prototyping technology, it is a model of digital document as the
foundation, using the adhesive materials, such as powder metal or
plastic to construct objects by means of step by step a printing
technology.It used in the mold manufacturing, industrial design,
and other fields has been used in the manufacture of the model, is
now gradually used for direct manufacturing of some products.In
particular, some high value applications (such as hip or teeth, or
some parts of the plane) has been using the technology of printing
components.

Linear motion bearings is a linear motion system at low cost
production, for unlimited travel used with cylindrical
shaft.Because point contact ball bearing with shaft, so using the
load is small.Steel ball with minimal friction spinning, which can
obtain high precision of smooth movement.

Type LM-UU: This is the metric dimension series with seal used most
frequently in Korea and Japan.

Type LME-UU: This is the metric dimension series with seal used most
frequently in Europe.

Type LMB-UU: This is the inch dimension series with seal used most frequently
in UK&USA